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Cisco 860 Series, Cisco 880 Series, and Cisco 890 Series Integrated Services Routers Hardware Installation Guide
OL-16215-12
Chapter 1      Product Overview
  Hardware Features
Dying gasp Detects when the router is losing power, and sends a 
power-fail signal to warn the DSLAM
16
 about the 
impending line drop. 
866VAE, 
867VAE, 
866VAE-K9, 
867VAE-K9,
xDSL 
models
888EA,
xDSL models
892FSP, 
896VA, 
897VA, 
897VAM, 
897VAW, 
897VAMW, 
898EA
Data BRI port Provides backup and remote management functions by 
connecting to the ISDN service provider if the main VDSL 
or G.SHDSL link fails.
—xDSL 
models, 
except for the 
3G and 
SRST
17
 
models
892 
V.92 modem Provides dial backup and remote management functions if 
the main WAN link fails.
— — 891 
FXO
18
 port An FXO interface connects local calls to a central office or 
PBX. This is the interface a standard telephone provides.
— 881 SRST  —
FXS
19
/DID
20
 
port
An FXS interface connects directly to a standard telephone, 
fax machine, or similar device. This interface supplies 
ringing voltage and dial tone to the station.
— SRST models —
BRI voice port The ISDN BRI S/T voice interface provides a client-side 
(TE) ISDN S/T physical interface for connection to an NT1 
device that terminates an ISDN telephone network. 
— 887V —
SFP
21
 port Supports auto-media-detection, auto-failover, and remote 
fault indication (RFI), as described in the IEEE 802.3ah 
specification. 
See the Cisco 892F data sheet for a list of supported SFPs.
— — 892F 
models, 
892FSP, 
896VA, 
897VA, 
897VAM, 
897VAW, 
897VAMW, 
898EA
1. FE = Fast Ethernet.
2. MDI = media-dependent interface in normal mode.
3. MDIX = media-dependent interface in crossover mode.
4. GE = Gigabit Ethernet.
5. MDI = media-dependent interface in normal mode.
6. MDIX = media-dependent interface in crossover mode.
7. VPN = Virtual Private Network.
8. IPsec = IP security.
9. This applies to most models of the Cisco 880 series routers.
10. This applies to Cisco 880 series routers with embedded, wireless antennas.
11. xDSL = General term referring to various forms of DSL, including ADSL (asymmetric digital subscriber line), VDSL (very-high-data-rate digital 
subscriber line), and G.SHDSL.
12. VDSLoPOTS = very-high-data-rate digital subscriber line 2 over plain old telephone service.
13. PoE = Power over Ethernet. This function can be added to an 880 or 890 series router by installing the PoE adapter card in the router and inserting the 
PoE 48-V external power adapter.
Table 1-18 Hardware Features Available in Cisco 860 Series, Cisco 880 Series, and Cisco 890 Series ISRs (continued)
Feature Description 860 Series 880 Series 890 Series